Apparatus for testing watch-balances



(No Model.)

W. D. OLN'EY. l APPARATUS FOR TESTING WATCH BALANCES. N0.429,699.

Paten-ted June 10, 1890.

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UNITED STATES PATENT OEEICE.

VILLIAM D. OIINEY, OF VA-LTHAM, MASSACHUSETTS.

APPARATUS' FOR TESTIG WATCH-BALANCES.

SPECIFICATION forming part of Letters Patent No. 429,699, dated June 10,1890. Application filed December 3,1889. serrare. 332,484. (Na mods.)

To all whomj it may concern:

Be it known that I, WILLIAM D. OLNEY, of Waltham, county of Middlesex,State of Massachusetts, have invented an Improvement in Apparatus forTesting VVatch-Balances, of which the following description, inconnection with the accompanying drawings, is a specification, likeletters on the drawings representing like parts.

This invention has for its object to provide a novel and efficientapparatus of simple con struction for testing balances of watches andlike mechanism.

In accordance with myl invention two spindles or shafts supported by asuitable base and having fasten ed to them brackets, to which thesprings of the balances are secured, have mounted upon them disks, towhich are connected the ends of a band or chain, one spindle beingengaged by a friction device, by which both spindles are held in properworking position.

Other features in which my invention consists will be pointed out in theclaims at the end of this specification.

Figure 1 is a top or plan view of an apparatus embodying my invention;2, a section through the base on line oc Fig. l, the upper part. of theapparatus being in elevation; and Fig. 3, a sectional detail on line ccFig. 2, looking down.

The base A, to support the working parts of the apparatus, as hereinshown, forms part of an annular ring a.

p The base A has secured to its under side, as by screws a d2, bracketsd3 d4, having eX- tended arms d5 d, in which are stepped upright shaftsor spindles 0.70.8, which are eX- tended up through the base an d havesecured to them above the said base one end of curved uprights b b',herein shown asv slotted, each upright being preferably enlarged or madewider at its upper end, as at 2. The curved slotted upright b hassecured to its upper end a bar Z13, shown as provided with a handle bx,and having a depending arm b4, forming one jaw of a pair of nippers, itbeing provided, as shown, with a slot, in which is pivoted one end of alever b5, extended through the slotted upright, the said lever havingsecured to it the movable jaw b of the said nippers. The

lever b5 is engaged at or near its rear end by a spring bl, securedtothe upright b, which spring acts to force the movable jaw h6 towardthe fixed jaw b4. The curved slotted upright b is also provided at itsupper end with a bar d, having a depending lug d', forming a fixed jawof a pair of nippers, the4 movable jaw of which is a lever d2, havingone end pivoted to the fixed jaw and its other end extended through theslotted upright and engaged at its end by a spring CZSO.

' The slotted uprights b h sustain supports Z3 d4 for the pivots of thewatch-balances (Z5 CZ, each support being shown asa bar pivoted in theslotted nprights b 1)',as at CZ", only one of the said pivots beingshown, and preferably each lever is provided with acounterbalancing-weight (Z7, through which the pivot @ZX is extended.

The shafts or spindles di a8 have mounted upon them, as shown, segmentsof vdisks e e', having connected to them the opposite ends of a chain orband e2, and the spindle as is encircled by a spiral spring e3, havingone end fastened, as herein shown, to the disk e and its other end tothe arm d of the bracket d4.

The spring c3 acts to turn the spindles as to maintain the chain or bandtaut, and thereby cause the uprights b to be moved with the same forceand to the same extent as the upright Z). The uprights are maintained intheir proper working position by afriction device, shown as a bent barpassed about a stud e4 on the base and having its arms e5 c6 engagingthe spindle al, and preferably adjustably forced toward each other by aset-'screw es. (See Fig. 3.)

In operation the standard-balance CZ, preferably provided with a pin orstud e9, secured to the end of the spring f of the said balance, isplaced with its pivot resting upon the support (Z4, and the stud c" heldbetween the jaws d (Z2. The balance (Z5 to be tested is supported at itspivot upon the support d3, and the end of its spring f is placed betweenthe jaws b4 h6. rights toward each other, as indicated by dotted lines,Fig. l, as by means of the handle b on the bar b3, and then back againinto their full-line position to set the balances in motion. If thebalance (Z5 vibrates in unisony The operator then turns the up- IOO withthe balance il, itsspringf isof theproper length; but if not thevibration is stopped by hand or allowed to cease, and the spring j" isgrasped by the jaws at another point and this operation repeated untilthe balance (Z5 vibrates in unison with the balance d.

The bracket a is provided with a slot f5, through which the set-serew a2is extended, and by which the said bracket may be adjusted with relationto the bracket a3 to bring the balance d" nearer to or remove it fromthe balance (Z5 to allow balances of different diameters to be tested.

By means of the friction device engaging the spindle a7 the uprights b1J are held maintained in proper working position after pressure isremoved from the upright b.

I claiml. In an apparatus for testing watch-balances, a base, spindlesa7 a8, supported thereby, uprights secured to said spindles, supportsfor the balancepivots, disks on the spindles a7 as, and a band or chainconnecting said disks, combined with a friction device engaging one ofthe said spindles to hold the uprights in proper working position,substantially as described.

2. In an apparatus for testing watch-balances, a base, spindles a7 as,supported theren by, nprights secured to said spindles, supports for thebalance-pivots, disks on the spindles aT as, and aband or chainconnecting said disks, combined with a spiral spring on one of saidspindles and a friction device engaging the other of said spindles,substantially as described.

3. In an apparatus for testing watch-balances, a base, spindles a7 as,supported thereby, uprights secured to said spindles, counterbalancedsupports for the l)alance-pivots, disks on the spindles a7 a8, and abandor chain connecting said disks, combined with a spiral spring on one ofsaid spindles and a friction device engaging the other ot' saidspindles, substantially as described.

4. In an apparatus for testing watch-balances, the col'nbination, with abase, of spindles a7 as, nprights secured thereto and provided withnippers, a counterbalanced support sustained by each upright, disks onsaid spindles, a chain or band connecting said disks, a spring to rotateone of said spindles, and a friction device, to operate substantially asdescribed.

5. ln an apparatus for testing watch-balances, the combination, with abase, of spindles a7 as, brackets a3 a4, secured to said base andsupporting said spindles, one of the said brackets being adjustable withrelation to the other, curved uprights secured to the spindles andprovided with nippers, counter balanced supports pivoted to saiduprights, disks e on the said spindles,achain orband connecting saiddisks, a spring e3, and a friction device, to operate substantially asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILLIAM D. O'LNEY. Witnesses:

JAMES 1I. CHURCHILL, E. J. BENNETT.

